<!--  -->
<script setup>
import { ref, defineProps, defineEmits, computed, watch } from 'vue'
import { useStore } from 'vuex'
import { useRoute, useRouter } from 'vue-router'
import Fuse from 'fuse.js'
import { filterRouters } from '@/utils/route'
import { generateRoutes } from './FuseData'
import { watchSwitchLang } from '@/utils/i18n'
/**
* 仓库
*/
const store = useStore() // eslint-disable-line
/**
* 路由对象
*/
const route = useRoute() // eslint-disable-line
/**
* 路由实例
*/
const router = useRouter()
let searchPool = computed(() => {
  const filterRoutes = filterRouters(router.getRoutes())
  return generateRoutes(filterRoutes)
})
console.log(searchPool)
// 1-开始创建组件-setup
/**
*传值
*/
const props = defineProps({}) // eslint-disable-line
const emits = defineEmits([]) // eslint-disable-line
/**
* 数据部分
*/
/**
 * 搜索库相关
 */
let fuse
const initFuse = searchPool => {
  fuse = new Fuse(searchPool, {
    // 是否按优先级进行排序
    shouldSort: true,
    // 匹配长度超过这个值的才会被认为是匹配的
    minMatchCharLength: 1,
    // 将被搜索的键列表。 这支持嵌套路径、加权搜索、在字符串和对象数组中搜索。
    // name：搜索的键
    // weight：对应的权重
    keys: [
      {
        name: 'title',
        weight: 0.7
      },
      {
        name: 'path',
        weight: 0.3
      }
    ]
  })
}
initFuse(searchPool.value)
// 处理国际化
watchSwitchLang(() => {
  searchPool = computed(() => {
    const filterRoutes = filterRouters(router.getRoutes())
    return generateRoutes(filterRoutes)
  })
  initFuse(searchPool.value)
})

// 控制search 显示
const isShow = ref(false)
// el-select 实例
const headerSearchSelectRef = ref(null)
const onShowClick = () => {
  isShow.value = !isShow.value
  headerSearchSelectRef.value.focus()
}

// search 相关
const search = ref('')
const searchOptions = ref([])
// 搜索方法
const querySearch = (query) => {
  if (query !== '') {
    searchOptions.value = fuse.search(query)
  } else {
    searchOptions.value = []
  }
}

// 选中回调
const onSelectChange = (val) => {
  router.push(val.path)
}

/**
 * 关闭 search 的处理事件
 */
const onClose = () => {
  headerSearchSelectRef.value.blur()
  isShow.value = false
  searchOptions.value = []
}
watch(isShow, (val) => {
  if (val) {
    document.body.addEventListener('click', onClose)
  } else {
    document.removeEventListener('click', onClose)
  }
})
</script>
<template>
  <div :class="{ show: isShow }" class="header-search">
    <svg-icon class-name="search-icon" icon="search" @click.stop="onShowClick" />
    <el-select ref="headerSearchSelectRef" class="header-search-select" v-model="search" filterable default-first-option
      remote placeholder="Search" :remote-method="querySearch" @change="onSelectChange">
      <el-option v-for="option in searchOptions" :key="option.item.path" :label="option.item.title.join(' > ')"
        :value="option.item"></el-option>
    </el-select>
  </div>
</template>

<style scoped lang='scss'>
.header-search {
  font-size: 0 !important;

  .search-icon {
    cursor: pointer;
    font-size: 18px;
    vertical-align: middle;
  }

  .header-search-select {
    font-size: 18px;
    transition: width 0.2s;
    width: 0;
    overflow: hidden;
    background: transparent;
    border-radius: 0;
    display: inline-block;
    vertical-align: middle;

    ::v-deep .el-input__inner {
      border-radius: 0;
      border: 0;
      padding-left: 0;
      padding-right: 0;
      box-shadow: none !important;
      border-bottom: 1px solid #d9d9d9;
      vertical-align: middle;
    }

    ::v-deep.el-select .el-input.is-focus .el-input__inner {
      box-shadow: none !important;
    }
  }

  &.show {
    .header-search-select {
      width: 210px;
      margin-left: 10px;
    }
  }
}
</style>
